There are a few B407's in Ireland already, they seem very popular, and the UK dealer (Alan Mann Helicopters) can do maintenance and training.

There are several AS350B3's in the UK, and 3 or 4 large UK based companies that have approvals for conversions, however getting a B3 available for training may be difficult, as I looked into doing a rating last year and couldn't source one in the time I had available. Maintenance shouldn't be a problem, I think Irish Helicopters or LHC could look after it.

There are at least 2 A119 Koala's in Ireland as far as I know, and 2 EC130's, both types are supposed to have great performance but would proably be a bit more expensive to buy and operate.

Insurance can vary quite a bit depending on the company, our insurance company for example, ask for 2000 hrs minimum, although that is for an IFR twin. It shouldn't be too expensive for a single tubine assuming you have at least 500 hrs. Otherwise they will just load the premiums until you have whatever hours they require.